[Intel-wired-lan] [PATCH net v2] i40e: Fix check for PF state (vf disable)
Mateusz Palczewski
mateusz.palczewski at intel.com
Mon Nov 23 14:45:17 UTC 2020
Adding missing comments to previously applied patch.
When PF state bit for __I40e_VF_DISABLE is set,
it doesn't mean necessary that the VF called in
i40e_reset_vf is disabled. It is rather impossible to
call a reset on a disabled VF, so return false and
repeat the request after a while.
Fixes: 8d38e0cd5211("i40e: Fix removing driver while bare-metal VFs pass traffic")
Signed-off-by: Mateusz Palczewski <mateusz.palczewski at intel.com>
Signed-off-by: Slawomir Laba <slawomirx.laba at intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov at intel.com>
---
drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 8951740..d30a57f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -1423,6 +1423,8 @@ bool i40e_reset_vf(struct i40e_vf *vf, bool flr)
/* If the VFs have been disabled, this means something else is
* resetting the VF, so we shouldn't continue.
+ * This is a global state of a PF, so it is possible that
+ * a different VF is in reset.
*/
if (test_and_set_bit(__I40E_VF_DISABLE, pf->state))
return false;
--
2.17.1
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